Smelting-furnace.



Mmmm AUG. 2Q

E. L. 5 N. WRINKLE.

SMELTNG FUBNAGB.

ALPLIGATIONTILED JUNE 3. 1904.

' A zsHBETs-SHEET 1.`

PATENTED AUG. 29, 1905.

H. L. N. WMNKLE.

SMELTING PURNACE.

APPLIoATIoN FILED JUNE a. w04.

2 SHEETS-SHEET 2.

il@ gf/wam. MTM/VE YS dUNTTED STATES PATENT OEEIOE.

HERBERT LAURENCE ivaINxLE AND NOAH waiNKLE, OE KEELEE, CALIFORNIA.

SMELTlNG-FURNACE.

' As here illustratedit is designed for smelting lines the arrangerfensoda; but the invention is useful in connectionwith any fuel and forsmelting various other substances by slight modifications in the designof the furnace.

The invention resides in certain novel features of construction andorganization, which will be fully set forth hereinafter. Reference ishad to the accompanying drawings, which illustrate an example of ourinvention, in which drawings like reference characters indicate likeparts in both theviews, andiin which-f Figure 1 is a sectional plan onthe line 2 2 of Fig. 2,this vievwrlso indicating by broken "oftheair'lblastconduits, which are ldlcatedabofitle lineo'f section; andFig. 2 is a vertiealw'section of the furnace.

The furnace isformed with a Crucible or melting-chamber 10, above whichis a stack or shaft 11, said Crucible or melting-chamber being providedwith tangentially -disposed twyers 12, the stack havinga charging-hopperandbell 14 and outlet-conduits 15 for the wastegases. The furnace isconstructed on a suitable base or foundation 16, and the cru- Cible andshaft or stack are suitablylined, ac-

l cording to the work whichv the furnace is intended to perform. 1n thecase of the sodasmelting furnace here illustrated the hearth 10'L andthe lower part of the side walls of the crucibleare formed of basicmaterial, and the remaining interior brickwork 10" of the 'cru cible and11 ofthe stack are silica lirebrick, the' external brickwork- 10c and11" being of "red brick.

As best shown in Fig. 2, the crucible 10 and shaft 11 are provided withbracing-staves sired form.

16a and hoops 17, which may be of any de: The dome 10", forming the topof the Crucible l0, is arranged below and spaced from the dome 18 andforms with the domeIO" an air-chamber.19.- vThe dome 18 Specification ofLetters Patent.

Application filed June 3, 1994. Serial No. 210,966.

l Patented Aug.29,1eo5.

also constitutes the support for the shaft 11, so that the inner dome10h or top of the cru- Cible may be removed at anytime for the purposeof repair without disturbing the stack. It will also be observed in thisconnection that thc bottom 10 of the crucible andthe inner surface orlining 11 of the vshaft may be removed for repair without disturbing theother parts of the apparatus. The chamber 19 is provided with apartition or wall 20, extending from `the stack outward to the sides ofthe furnace, (see dotted lines` Fig. 1,) which wall serves to facilitatethe circulation of the blast through the chamber 19 for the doublepurpose of coolingy the roof of the Crucible and heating the air, all ofwhich will be fully set forth hereinafter.

In connection with the crucible 1 0 and shaft 1l we desire to point out-the relative area of these chambers and to explain that using thefurnace in connection with fiuid *fuel the area of the Crucible is suchthat the material falling from the stack `11 into'the Crucible willoccupy in the Crucible the form of atruncated cone, the base ofwhich'does not extend farther tlian the outer or marginal limits of thebottom 10L of the Crucible. This-provides in the outer portion of theCrucible an unobstructed passage for the Circulation of the burninggases, which' gases in moving 'Circularly around the cruciblereverberate upon the matter in the Crucible and finally 'work throughthe mass of material in the stack and pass'out through the .conduits 15,exerting meanwhile upon the material inthe stack the necessary smelting,calcining, and drying action.

The twyers 12 being tangentially arranged cause the burning gases totake up a circular or spiral movement in the direction of the arrowsindicatedin Fig. 2. -The fuel used in connection wit the furnace inaccordance with the example here illustrated may be either liquid orgaseous.

2l indicates the fuelfnozzles, which are projected, respectively,.intothe twyers 12 and provided with the necessary complementary devices forvarying the 'amount of the fuel and the ad mixture of air therewith. Asshown in Fig. 2; the conduit 22, leading from the4 IOO discharge of theair-blast, basa branch or extension 23 passing into the chamber 19 atone side of vand adjacent 'to the partition 20 thereof. From the conduit22 branches 24 pass,'

respectively, to the twyers l2, thesebranches -branch conduits 24- beingcommanded by air-valves 25, which may' be of any form desired. Leadingfrom the Achamber 19 at the side of the partition 2O opposite the sideon which the branch 23 is located are two branch conduits 26, whichpass, respectively, into the branches 24. Between the branches 26 andthe twyers 12,airvalves 27 or other desired means for controlling theair movement are located, these valves commanding the movement of airthrough the Upon supplying the blast to the conduit 22 said blast passesinto the chamber 19 and through the same', from which it passes outthrough the branches 26 and 24 to the respective twyers ll2. Themovement of the air-blast through the'chamber 19 serves,'therefore,thetwofold result of cooling the top wall of the crucible and of heatingthe blast preliminary to its introduction into the furnace through thetwyers.

i This heating of the blast brings abouta' more thorough mixture of theair and fuel, and consequently a more thorough combustion of the fuel inthe furnace.

According to the embodiment of the inven. tion here illustrated theoutlet fromthe crucible consists in a radial passage 28, having aspoutor continuation-29, the spout being" from the furnace is gathered.

37 indicates the conveyer-chain for carrying the material through thetunnel.

The organized operation may be traced asl follows: '-lhe material to besmelted should be charged through the bell14 intothe shaft 11, whereuponit will fall upon the bottom of the crucible 10 and assume the form of atruncated cone, as before explained, the material thenrising in thestack to a point dependent upon the amount charged into the furnace.Upon turning on the air-blast and fuel the burning gases will move witha swirling or circular motion in the upper part of the crucible aroundthe cone-like body of the material therein and will be reverberated bythe upper wall of the fu rnacc down on this material,'fus ing thesameand finally passing up through the mass of material in the stack andout through the conduits l5, during which passage lthe material in thestack is dried and calcined.

`tition and leading into thecrucible.

ycible of the furnace.

two subscribing witnesses.

After the-operation of the furnace begins the l air-blast in passingthrough the chamber 19 willcool the upper walls of the crucible and willin turn be subjected .to a preliminary heating, thus increasing theefficiency of the blast. The molten product of the furnace is 65 berbetween said walls, the stack extending '75 through both of said topwallsandmeans for circulating an air-current into said chamber and fromthe same into the crucible, for the purpose specified.

.2. Asmelting-furnacehavingacircularcru- 8 cible, a permanent outer topwall for the crucible, an inner top wall below theouter wall-and spacedtherefrom to form a circular chamber,

a stack sustained by the outer top wall-and passing through both,topwalls, a radial partition in the circular chamber, an air-blast pipepassing into' the chamber at one side of the partition, and .anair-blastfpipe passing from the chamber at the otherside of the par- 3.A smelting-furnace havinga circular crucible, a permanent outer top wallfor the crucible, an inner top wall below the outer wall, and'spacedtherefrom to form a circular air-A chamber between the two walls,ad astack 95 sustained by the outer top wall and passing through both topwalls to communicate with the interior .of the crucible. i A

4. Asmelting-furnacehavingaircularcrucible, a permanent outer top wallfor the crucible` an inner top wall below the outer wall, and spacedtherefrom to form 4a circular airchamber between the two walls, a stacksustained by the outer top wall and passing through both top walls tocommunicate with the interior of the crucible, and means for circulatingan air-blast through said circular air-chamber and from the same intothe cru in testimony whereof we have signed our names to thisspecification 1n the presence of atentar LAURENCE walNKLn v NOAHWRINKLE. Witnesses:

- Bas l. HUNTER, JonN McCoaD.

IOO

los.

IXO

